source: de.wigbels.ruby/hothotread/hothotpiper.rb@ daaef3e

#!/usr/bin/env ruby
#
# Author: Norbert Wigbels - foobla.wigbels.de/uber-foobla
#
# HotHotPiper continously reads the status of a
# reed contact attached to the Raspberry Pi GPIO
#
# The reed measures gas usage.
#
# A magig URL is formed and called; the url
# stores the sensor-data to wigbels.net
#
# todo: status-led
# 

#------------------------------------------
# Tainted mode 0-4
$SAFE=0

#------------------------------------------
require 'net/http'
require 'pi_piper'

include PiPiper

@mypath = File.expand_path(File.dirname(__FILE__))


watch :pin => 4, :trigger => :falling do 
  puts('added 10 liter of gas to sensor-database')
  Net::HTTP.get(URI.parse('http://www.wigbels.net/cgi-bin/hhw.rb?sensorid=1&data=10'))
  system("rrdtool update #{@mypath}/energy.rrd N:10:U:U")
end

PiPiper.wait